If you need that block for storing null-terminated string then yes, you need to explictly ask malloc() to allocate an extra byte for storing the null-terminator, malloc() will not do it for you otherwise. If you intend to store the string length somewhere else and so you don’t need the null terminator you can get … Read more
You can try RuneCountInString from the utf8 package. returns the number of runes in p that, as illustrated in this script: the length of “World” might be 6 (when written in Chinese: “世界”), but the rune count of “世界” is 2: package main import “fmt” import “unicode/utf8” func main() { fmt.Println(“Hello, 世界”, len(“世界”), utf8.RuneCountInString(“世界”)) } … Read more
You can use mb_strlen() to get the byte length using a encoding that only have byte-characters, without worring about multibyte or singlebyte strings. For example, as drake127 saids in a comment of mb_strlen, you can use ‘8bit’ encoding: <?php $string = ‘Cién cañones por banda’; echo mb_strlen($string, ‘8bit’); ?> You can have problems using strlen … Read more
I would use a list comprehension: def by_size(words, size): return [word for word in words if len(word) == size]
It depends on how you format the Guid: Guid.NewGuid().ToString() = 36 characters (Hyphenated) outputs: 12345678-1234-1234-1234-123456789abc Guid.NewGuid().ToString(“D”) = 36 characters (Hyphenated, same as ToString()) outputs: 12345678-1234-1234-1234-123456789abc Guid.NewGuid().ToString(“N”) = 32 characters (Digits only) outputs: 12345678123412341234123456789abc Guid.NewGuid().ToString(“B”) = 38 characters (Braces) outputs: {12345678-1234-1234-1234-123456789abc} Guid.NewGuid().ToString(“P”) = 38 characters (Parentheses) outputs: (12345678-1234-1234-1234-123456789abc) Guid.NewGuid().ToString(“X”) = 68 characters (Hexadecimal) outputs: {0x12345678,0x1234,0x1234,{0x12,0x34,0x12,0x34,0x56,0x78,0x9a,0xbc}}
You are looking for CHAR_LENGTH() to get the number of characters in a string. For multi-byte charsets LENGTH() will give you the number of bytes the string occupies, while CHAR_LENGTH() will return the number of characters.
If you’re using a std::string, call length(): std::string str = “hello”; std::cout << str << “:” << str.length(); // Outputs “hello:5” If you’re using a c-string, call strlen(). const char *str = “hello”; std::cout << str << “:” << strlen(str); // Outputs “hello:5” Or, if you happen to like using Pascal-style strings (or f***** strings … Read more
If you are talking about the length of the string, you can use len(): >>> s=”please answer my question” >>> len(s) # number of characters in s 25 If you need the size of the string in bytes, you need sys.getsizeof(): >>> import sys >>> sys.getsizeof(s) 58 Also, don’t call your string variable str. It … Read more
For MongoDB 3.6 and newer: The $expr operator allows the use of aggregation expressions within the query language, thus you can leverage the use of $strLenCP operator to check the length of the string as follows: db.usercollection.find({ name: { $exists: true }, $expr: { $gt: [{ $strLenCP: ‘$name’ }, 40] } }) For MongoDB 3.4 … Read more
varchars and equality are thorny in TSQL. The LEN function says: Returns the number of characters, rather than the number of bytes, of the given string expression, excluding trailing blanks. You need to use DATALENGTH to get a true byte count of the data in question. If you have unicode data, note that the value … Read more